Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
12007excellentexcellent11excellent
11005excellentexcellent11excellent
10005excellentexcellent11excellent
09007excellentexcellent11excellent
08004excellentexcellent11excellent
07003excellentexcellent11excellent
06001excellentexcellent11excellent
05005excellentexcellent11excellent
040011excellentexcellent11excellent
030010excellentexcellent11excellent
020020goodexcellent41excellent
010027goodexcellent41excellent
000022goodexcellent31excellent
230019goodexcellent21excellent
220018goodexcellent21excellent
210011excellentexcellent21excellent
200011excellentexcellent21excellent
19009excellentexcellent11excellent
180010excellentexcellent21excellent
17009excellentexcellent21excellent
16009excellentexcellent21excellent
15008excellentexcellent21excellent
140010excellentexcellent21excellent
13008excellentexcellent21excellent